correct outdated dev start info

README.md

@@ -358,7 +358,7 @@ Prerequisites:
 * [Git](http://git-scm.com/book/en/v2/Getting-Started-Installing-Git)
 * [Meteor](https://www.meteor.com/install)
 
-> Meteor automatically installs a hidden [NodeJS v8](https://nodejs.org/download/release/v8.9.3/), [Python v2.7](https://www.python.org/downloads/release/python-270/) and [MongoDB v3.6](https://www.mongodb.com/mongodb-3.6) to be used when you run your app in development mode using the `meteor` command.
+> Meteor automatically installs a hidden [NodeJS v12](https://nodejs.org/download/release/v12.16.1/) and [MongoDB v4.2](https://docs.mongodb.com/manual/introduction/) to be used when you run your app in development mode using the `meteor` command.
 
 Now just clone and start the app:
 
@@ -368,6 +368,7 @@ cd Rocket.Chat
 meteor npm install
 meteor npm start
 ```
+For more detailed step-by-step, see our [quick start for developers](https://docs.rocket.chat/guides/developer/quick-start) docs.
 
 To debug the server part, use [meteor debugging](https://docs.meteor.com/commandline.html#meteordebug). You should use Chrome for best debugging experience: